[1] Univ Hosp Virgen Rocio, Dept Dermatol, Seville, Spain
[2] Univ Hosp La Paz, Dept Dermatol, Madrid, Spain
[3] Univ Hosp Bellvitge, Dept Dermatol, Barcelona, Spain
[4] Univ Hosp Ramon & Cajal, Dept Dermatol, Madrid, Spain
[5] Univ Hosp Puerta Hierro, Dept Dermatol, Madrid, Spain
[6] Univ Hosp Germans Trias i Pujol, Dept Dermatol, Badalona, Spain
[7] Univ Hosp Doctor Peset, Dept Dermatol, Valencia, Spain
[8] Univ Hosp Gen Valencia, Dept Dermatol, Valencia, Spain
[9] Univ Hosp Alicante, Dept Dermatol, Alicante, Spain
[10] Univ Hosp Gregorio Maranon, Dept Dermatol, Madrid, Spain
[11] Gen Hosp Granollers, Dept Dermatol, Barcelona, Spain
[12] Univ Hosp Arnau Vilanova, Dept Dermatol, Valencia, Spain
[13] Juan Ramon Jimenez Hosp, Dept Dermatol, Huelva, Spain
[14] Infanta Leonor Hosp, Dept Dermatol, Madrid, Spain
[15] St Pau Hosp, Dept Dermatol, Barcelona, Spain
[16] Univ Hosp Puerto Real, Dept Dermatol, Puerto Real, Spain
[17] Univ Hosp Virgen del Roci, Dept Dermatol, Avda Manuel Siurot S-N, Seville 41013, Spain